Into the Depths
The rest of the group piles into the room as Skáth ducks behind a convenient pillar. As they enter, the chanting becomes more audible to them - a low pitched droning that fills the room with unintelligible words, it almost seems to set the party's bones vibrating. The light from the lantern is reflected off the walls and floor, illuminating the entire room with a ghostly glow.
Unlike previously inspected areas, the flint in this room has been carefully worked and sanded smooth. The chamber is roughly 20' x 30', the ceiling (visible in the reflected light) about 25' up. The pillars seem at a glance to be carved of a different material than the walls, floor, and ceiling. They extend floor to ceiling, have a greenish tint, and their entire surface is covered with holes. The pyramid at the other end of the room appears to made of humanoid skulls, with a stairway made of some sort of long snouted, fanged animal skull running up the front center. It is about 10 feet high. This room is warm enough that there is no ice on any surface.
At the top of the pyramid, seated on an obsidian throne, is a skeleton. It appears to be slightly larger in stature than the frozen warriors previously encountered, but still well below average height. The group just has time to see the head turning toward the doorway and the eyes glowing orange before another set of flames spear out in their direction. The bolts lick around Béar's clothing but do no damage. The figure remains seated on the throne.